Damn that cello is gorgeous, beautifully performed. I started listening with the impression that this was going to be an emotionally heavy soundtrack, an expressive cello always does it to me. The rest of the soundtrack turned out to be much lighter than expected, with a healthy dose of playfulness and childlike wonder. It returns to a similar soulful leitmotif at the end to come full circle. You captured the Studio Ghibli spirit well, where it's sometimes fun and playful, and sometimes heartwarming.
The mixing was very well executed, all the instruments had a good amount of space to do their own thing. Drums were surprisingly punchy for an orchestral soundtrack, which was a welcomed surprise. Overall very well made, good job!